11730 ZIP Code — East Islip, NY

Suffolk County, New York

ZIP code 11730 is located in East Islip, New York, within Suffolk County. It covers approximately 4.50 square miles and serves a population of 14,168 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 631.

About ZIP code 11730

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $542,200. Owner-occupancy is high at 83%, well above the national average.

Median household income is $137,649. The poverty rate of 4% is below the national average. 40% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 31 minutes is near the national average.

Educational attainment is near the national average, with 37% of residents holding a bachelor's degree or higher.

Overall, ZIP code 11730 reflects a community defined by high homeownership and a significant Social Security-dependent population.

14,168

population

4.50

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

11730 ZIP code map

Cities in ZIP code 11730

Below are the cities the US Postal Service accepts for ZIP code 11730. Using any city not on this list may result in mail delivery delays.

City	Status
East Islip	Acceptable
East Islip	Preferred

Nearby ZIP codes

11751 Islip (2.4 mi) 11769 Oakdale (2.4 mi) 11752 Islip Terrace (2.5 mi) 11706 Bay Shore (2.6 mi) 11796 West Sayville (3.6 mi) 11716 Bohemia (4 mi) 11722 Central Islip (4.2 mi) 11718 Brightwaters (4.9 mi) 11782 Sayville (5.5 mi) 11749 Islandia (5.7 mi) 11749 Islandia (5.7 mi) 11717 Brentwood (5.9 mi)

Demographics updated 05/2026

Population
Total population	14,168
Population density	3,148 / sq mi
State FIPS	36
County FIPS	103

Geography
Land area	4.50 sq mi
Water area	0.49 sq mi
Latitude	40.7235
Longitude	-73.1698
Timezone	Eastern (ET)
Area code	631

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.7%	22.6%	37.0%
$50k – $100k	23.3%	24.7%	27.0%
$100k – $200k	39.5%	34.6%	24.4%
Over $200k	15.5%	18.0%	11.5%

Demographics & statistics

14,168

Population

3,148

People per sq mi

42.4

Median age

$137,649

Median household income

$58,970

Per capita income

$542,200

Median home value

$2,404

Median monthly rent

83.3%

Home ownership

3.6%

Poverty rate

2.5%

Unemployment

4,373

Housing units

36.8%

Bachelor's or higher

Age distribution

Male Female

344

Under 5

343

382

5–9

380

325

10–14

324

500

15–19

497

445

20–24

443

1,007

25–34

1,001

783

35–44

779

741

45–54

737

748

55–59

744

469

60–64

467

801

65–74

798

362

75–84

360

194

85+

194

← Male

Female →

Age summary

Group	Count	%
Under 18	2,870	20.3%
18 and over	11,298	79.7%
65 and over	2,709	19.1%
Median age	42.4 years

Race & ethnicity

White 78.9%

Hispanic or Latino 8.2%

Other race 4.4%

Two or more races 4.1%

Black or African American 3.1%

Asian 0.9%

American Indian / Alaska Native 0.3%

Group	Count	%
White	12,178	78.9%
Hispanic or Latino	1,272	8.2%
Other race	684	4.4%
Two or more races	635	4.1%
Black or African American	486	3.1%
Asian	140	0.9%
American Indian / Alaska Native	45	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.7%	22.6%	37.0%
$50k – $100k	23.3%	24.7%	27.0%
$100k – $200k	39.5%	34.6%	24.4%
Over $200k	15.5%	18.0%	11.5%

Under $10k 0.8%

$10k–$15k 2.1%

$15k–$25k 4.5%

$25k–$35k 5.8%

$35k–$50k 2.4%

$50k–$75k 9.1%

$75k–$100k 13.6%

$100k–$150k 19.0%

$150k–$200k 15.5%

$200k+ 27.1%

Range	% of households
Under $10k	0.8%
$10k–$15k	2.1%
$15k–$25k	4.5%
$25k–$35k	5.8%
$35k–$50k	2.4%
$50k–$75k	9.1%
$75k–$100k	13.6%
$100k–$150k	19.0%
$150k–$200k	15.5%
$200k+	27.1%
Median income	$137,649

Housing

Home values

Under $50k 0.2%

$50k–$100k 1.3%

$100k–$150k 1.6%

$150k–$200k 0.4%

$200k–$300k 6.8%

$300k–$500k 30.9%

$500k–$1M 56.1%

$1M+ 2.7%

Housing overview

Metric	Value
Median home value	$542,200
Median rent / month	$2,404
Owner occupied	83.3%
Renter occupied	16.7%
Vacant	2.8%
Single-family detached	79.5%
Large apartment buildings	8.5%
Mobile homes	0.0%
Median rooms	6.5
Avg household size (owned)	2.91

Year built

Era	%
2020 or later	0.2%
2010–2019	4.2%
2000–2009	2.1%
1990–1999	4.4%
1980–1989	5.2%
1970–1979	11.0%
1960–1969	18.1%
1950–1959	37.5%
1940–1949	4.6%
1939 or earlier	12.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	6.8%
2 bedrooms	18.2%
3 bedrooms	42.6%
4 bedrooms	24.2%
5+ bedrooms	8.1%

Vehicles per household

Vehicles	% of households
No vehicle	6.7%
1 vehicle	25.1%
2 vehicles	31.9%
3 or more	36.3%

Heating fuel

Fuel type	%
Utility gas	35.8%
Electricity	12.0%
Propane / LP gas	1.9%
Fuel oil	47.3%
Wood	0.4%
Solar	0.5%

Households & families

Household type	Count	%
Married-couple family	2,711	53.4%
Cohabiting couple	320	6.3%
Male householder, no spouse	843	16.6%
Female householder, no spouse	1,201	23.7%
Households with children under 18	1,626	32.0%
Households with seniors (65+)	1,909	37.6%
Average household size	2.77

Marital status

Status	Male	Female
Never married	38.0%	32.0%
Married	49.7%	47.0%
Separated	0.0%	1.9%
Widowed	2.5%	9.7%
Divorced	9.8%	9.4%

Education

Less than 9th grade 2.5%

Some HS, no diploma 3.1%

HS graduate 27.4%

Some college, no degree 19.6%

Associate's degree 10.6%

Bachelor's degree 19.1%

Graduate / professional 17.7%

Metric	%
HS diploma or higher	94.4%
Bachelor's or higher	36.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	343	10.7%
Kindergarten	110	3.4%
Elementary school	1,130	35.3%
High school	848	26.5%
College / grad school	771	24.1%

Employment

Industry of employment

Education & healthcare 28.8%

Professional & management 12.4%

Arts, food & hospitality 9.8%

Retail trade 8.8%

Finance & real estate 8.6%

Construction 7.0%

Transportation & utilities 6.9%

Manufacturing 5.1%

Public administration 5.1%

Other services 3.2%

Wholesale trade 2.1%

Agriculture & mining 1.5%

Information 0.5%

Occupation

Category	%
Management, business & arts	53.2%
Service	11.9%
Sales & office	22.6%
Natural resources & construction	4.2%
Production & transportation	8.1%

Employment type

Type	%
Private sector	70.1%
Government	23.2%
Self-employed	6.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.9%
Carpool	6.0%
Public transit	3.4%
Walk	1.3%
Work from home	8.5%
Other means	0.0%
Avg commute (minutes)	30.5

Poverty

All people 3.6%

Under 18 years 2.2%

18 and over 4.0%

Married-couple families 1.7%

Female-led households 3.7%

Income support

Source	% of households
Social Security	39.6%
Retirement income	28.7%
Supplemental Security	4.5%
Cash public assistance	0.7%
Food stamps / SNAP	2.6%

Health indicators

Condition	%
Obesity	25.8%
High blood pressure	26.6%
High cholesterol	29.6%
Diabetes	7.1%
Heart disease	4.9%
Stroke	2.2%
Asthma	9.2%
Arthritis	19.0%
Kidney disease	2.3%
Pulmonary disease	4.9%
Cancer	6.7%

Behavior / access	%
Smoking	13.2%
Binge drinking	19.0%
No physical activity	19.2%
Less than 7 hrs sleep	32.8%
Depression	17.0%
Fair or poor health	8.9%
Poor mental health	12.8%
Poor physical health	7.7%
No health insurance	8.6%
Visited doctor (checkup)	78.1%
Visited dentist	72.8%
Cholesterol screening	92.6%
Teeth loss	9.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	462	4.1%

Disability	%
Any disability	10.2%
Under 18	3.2%
18–64 years	9.1%
65 and over	21.8%

Health insurance coverage

Type	%
Private insurance	84.2%
Public insurance	28.5%
No insurance	2.0%
Uninsured under 19	1.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	13,481	95.2%
Spanish	366	2.7%
Other Indo-European	211	1.6%
Asian & Pacific Islander	73	0.5%
Other languages	27	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	13,058	92.2%
Born in same state	12,902	91.1%
Born in different state	12,339	87.1%
Foreign born	156	1.1%
Naturalized citizen	1,110	7.8%
Not a US citizen	870	78.4%

Ancestry

Ancestry	Count	%
Italian	3,544	25%
Arab	807	5.7%
French	745	5.3%
Irish	105	0.7%
Polish	75	0.5%

Ancestry	Count	%
German	46	0.3%
English	21	0.1%
Dutch	14	0.1%
Norwegian	5	0%

Technology access

Metric	% of households
Computer access	35.8%
Internet access	93.1%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 11730

What city is ZIP code 11730 in?

ZIP code 11730 is primarily assigned to East Islip, New York.

What county is ZIP code 11730 in?

ZIP code 11730 falls within Suffolk County, New York.

Is ZIP code 11730 mostly owner-occupied?

83% of occupied units in ZIP code 11730 are owner-occupied, well above the national average.

Does ZIP code 11730 have a large retiree population?

40% of households in ZIP code 11730 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 11730?

The median household income in ZIP code 11730 is $137,649, above the national median of ~$75,000.

What is the typical home value in ZIP code 11730?

The median home value in ZIP code 11730 is $542,200.

What timezone is ZIP code 11730 in?

ZIP code 11730 observes the EST timezone.